Flow-Induced Dilation of Wetted Granular Materials
(0) Understanding and describing the flowing properties of wetted granular materials has been a hotspot and conundrum in the research of granular dynamics.This paper investigates flowing properties of wetted granular in the rotating drum,and quantitatively analysis dilation effect of wetted granular.Results show: (1) For the same type of granular material,dilation ratio increased with the water content,but there will be a saturation effect when the water content reach about 3％;(2) Under the same water content,the larger of granular size d,the lower of dilation ratio D,and the averaged dilation ratio (D) will decline with d:(D)adb;(3) Dilation mechanism of wetted granular may be: the addition of water enhance the build-bridge effect which enhance the cohesion,and shearing of the drum leads to larger grain clusters that augment the void of the whole granular system,which would macroscopically exhibit as dilation of granular volume.
wetted granular shear dilation liquid bridge cluster
Cheng Liang OU YANG Hong-wu
China Academy of Engineering Physics,Mianyan 621900,P.R China Central South University,Changsha 410083,P.R China
国内会议
厦门
英文
1-5
2013-11-01（万方平台首次上网日期，不代表论文的发表时间）